You can connect your Cell Phone as a wireless modem to your computer or laptop, for both PC and Mac, and access the internet from anywhere.  All you need is an inexpensive data cable. There are additional features that data cables provide, however those features often require purchasing a separate software for the PC (usually not required for MAC OS). Data cables also provide communication between the cell phone and your computer. This is useful for transferring data and media between your PC / Mac.and the cell phone. It is more convenient to add contacts to an application on your computer then transferring them to the cell phone with one click. You can also export / synchronize your outlook contact list to your cell phone. Other common uses include, transferring your movies or images directly from your camera phone to your computer. Most service providers offer this feature for a fee, that usually involves emailing the images to yourself. You can avoid this fee by transferring your data using our data cables.